Why South America is called the continent of contrasts. What are the features of the nature of this continent?

South America is called the continent of contrasts due to the fact that this continent is located in several different climatic zones at once. This continent is characterized by heavy torrential rains and hot weather at the same time. That is, in one part of the mainland, heavy rains can pour, and in another, at the same time, there may be a drought.
The main feature of the continent is its belonging to 6 different climatic zones, in connection with which there are such types of climate on the continent: equatorial, tropical, temperate, subtropical and subequatorial.